Chapter 6: Tissues- Exercise- 78

Science

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Chapter 6: Tissues

Class: IX

Exercise number 78

Question 1

Name the tissue responsible for movement in our body.

Answer 1

The muscular tissue is responsible for movement in our body.

Question 2

What does a neuron look like?

Answer 2

A neuron consists of a cell body with a nucleus and cytoplasm. It has two important extensions known as the axon and dendrites. An axon is a long thread- like projection of nerve cells that transmits impulses away from the nerves cell body. Dendrites, on the other hand, are thread-like extensions of cell body that receive nerve impulses. Thus, the axon transmits impulses away from the nerves cell body and the dendrite receives nerve impulses. This how impulse transmitting very quickly.

 

Question 3

Give three features of cardiac muscles.

Answer 3

Three features of cardiac muscles are

(i)  They are involuntary muscles that contract quickly and without get fatigued.

(ii) The cells of cardiac muscles are uninucleate, branched, and cylindrical.

(iii) They control and co-ordinate the contraction and relaxation of the heart.

Question 4

What are the functions of areolar tissue?

Answer 4

(i) Areolar tissue supports internal organs.

(ii) It also helps in repairing skin and muscles tissues.